JPH0647107Y2 - Door hinge - Google Patents

Description

[Detailed description of the device] [The purpose of the device]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door hinge used for a door that automatically closes by its own weight when a hand is released. (Prior Art) Conventionally, as a hinge for a door as described above, for example,
57-202563 or JP-B 57-4689. That is, in Japanese Utility Model Application Laid-Open No. 57-202563, a shaft rod that is rotatably fitted into a shaft cylinder is attached to a lower hinge member that is fixed to a column, and an upper hinge member that has a sloped upper end and is fixed to a door. In addition to the above, there is disclosed a hinge structure in which the upper hinge member is provided in the shaft cylinder with a receiving piece having a slant surface on the lower end side that abuts on the slant surface of the upper end of the shaft rod. Further, in Japanese Utility Model Publication No. 57-4689, a seat body having a shaft rod and an inclined surface formed on the upper portion is provided on the upper end surface of the fixed side member, and the seat portion is provided on the lower end surface of the rotating side member. A hinge having a structure in which a concave portion having an inclined surface that abuts an inclined surface of a body is provided and the shaft rod is rotatably fitted in a shaft hole of a rotating side member is disclosed. Then, when the door to which these hinges are attached is rotated in the opening direction, the upper hinge member (rotation side member) that rotates together with this door.
Guides to the shaft rod or the slope of the seat body and rises, and then, when the hand is released from the door, the upper hinge member descends along the slope and reversely rotates due to the weight of the door. The door automatically returns to the closed position. (Problems to be solved by the invention) However, in the conventional door hinge as described above, the shaft of the lower hinge member (fixed member) fixed to the support is fixed to the door when the door is attached. Since the structure is such that it is simply inserted into the shaft hole of the upper hinge member (rotating side member), both of them have the problem of crime prevention that the door can be lifted and removed. The problem was to solve such problems. (Purpose of the Invention) The present invention has been made in view of the above-mentioned conventional problems, and it is possible to automatically close the door by its own weight and also to prevent the door from being removed. The purpose is to provide a hinge for a door that can.

[Constitution of device]

(Means for Solving the Problems) A hinge for a door according to the present invention includes an upper hinge member that is fixed to a door and a lower hinge member that is solid on a door support and that has a shaft and a shaft. A closer shaft portion having an inclined surface formed around the shaft is provided, and the other hinge member has a shaft hole that rotatably receives the shaft of the closer shaft portion and the shaft of the closer shaft portion around the shaft. A closer bearing portion having a slope contacting the formed slope is provided, and further, at the shaft tip of the closer shaft portion, a tip end portion of a slip-out preventing screw having the shaft portion inserted into the closer bearing portion is screwed. A space that does not interfere with the height difference of the slope is provided between the head portion of the slip-off prevention screw and the facing portion of the screw head portion of the closer bearing portion, and inside the hinge member without exposing the screw head portion to the outside. Up and down relative to the hinge member It has a movable structure, and is characterized in that the structure of such a door hinge is used as a means for solving the above-mentioned conventional problems. (Effect of the Invention) The hinge for the door according to the present invention has the shaft of the closer shaft part installed on one of the upper and lower hinge members and the closer bearing part installed on the other hinge member inserted through the door hinge. The tip of the preventive screw is screwed, and the height of slopes provided on the closer shaft and the closer bearing is higher and lower between the head of the retainer screw and the facing portion of the screw head at the closer bearing. There is a space that does not interfere with the difference. Therefore, due to the rotation of the door, the closer bearing portion or closer shaft portion provided on the upper hinge member is guided to the slope of the closer shaft portion or closer bearing portion provided at the lower hinge member, and rises together with the door and the upper hinge member. There is no hindrance to doing. Further, when the door reaches the maximum raised position, the head of the slip-out prevention screw abuts on the facing portion of the screw head in the closer bearing portion to restrict the further rise of the door, thereby removing the door. Is being prevented. (Example) Hereinafter, the present invention will be specifically described with reference to the drawings. FIGS. 1 to 4 show an embodiment of the present invention. In this embodiment, as shown in FIG. 2, an example of an inward opening gate to the left with the upper side of the drawing as the outside of the site is illustrated. There is. That is, as shown in FIGS. 1 (a) and 2, the door hinge according to the present invention comprises an upper hinge member 1 fixed to the suspension-side vertical frame B of the door A and a door support. The lower hinge member 2 fixed to a certain support C is provided. A lock having a handle and a bar is attached to the door-end-side vertical frame (not shown) of the door A so that it can be locked between the other door or the column. The upper hinge member 1 has a cylindrical portion 4 having an insertion hole 3 in the axial center thereof, and a mounting portion 6 fixed to a vertical frame B of the door A with a screw 5. On the other hand, the lower hinge member 2 has a cylindrical portion 8 similarly having an insertion hole 7 in the axial center portion, and a mounting portion 9 having an L-shaped cross section, and two insertion holes 7 are opposed to each other. The ridges 7a, 7a are formed. The lower hinge member 2 has a bolt 10 on one side on the inner surface of the site of the pillar C.
Another bolt passed through the other side of the L-shaped bracket 11 fixed with
Fixed by twelve. Further, a cover 13 shown by an imaginary line in FIG. 2 is attached to the part racket 11, and the bracket 9 and the attachment part 9 of the lower hinge member 2 are attached.
To improve the appearance. In this embodiment, the lower hinge member 2 has the closer shaft portion 14, the upper hinge member 1 has the closer bearing portion 15, and the insertion shaft portions 14e and 15a of the closer hinge member 2 and the insertion hole 7 of the hinge members 2 and 1, respectively. Each of them is attached by inserting it into the device 3. That is, the closer shaft portion 14 has a flange portion 14a at substantially the center thereof, and is formed concentrically around the shaft 14b together with the shaft 14b on the upper side of the flange portion 14a. The inner and outer double spiral slopes 14c and 14d are provided, and the closer to the lower side of the collar member 14a is the closer shaft portion 14
It has an insertion shaft portion 14e for fixing. Further, a female screw hole 14f is provided on the upper end of the shaft 14b, a small diameter portion 14g is formed on the insertion shaft portion 14e, and an insertion hole 7 for the lower hinge member 2 is formed.
Groove 1 that engages with the two ridges 7a, 7a provided on the
4h and 14h are formed vertically. Then, the closer shaft portion 14 engages the grooves 14h, 14h of the insertion shaft portion 14e with the ridges 7a, 7a of the insertion hole 7 until the flange portion 14a contacts the upper end surface of the cylindrical portion 8. After inserting into the insertion hole 7,
The tip of a screw 16 screwed into the screw hole 8a to be provided at the substantially central position of the cylindrical portion 8 is fixed to the lower hinge member 2 by being pressed against the small diameter portion 14g. On the other hand, the closer bearing portion 15 has a shaft hole 1 that rotatably receives the closer shaft portion 14 and the shaft 14b at the shaft center portion of the insertion shaft portion 15a.
5b and a through hole 15c communicating with each other in the vertical direction above the shaft hole 15b, and at the lower end thereof, as shown in FIG. It also has inner and outer double spiral bevels 15d, 15e that abut the heavy helix bevels 14c, 14d, respectively. Note that FIG. 1 (b) is a perspective view showing the slopes 15d, 15e by turning the closer bearing portion 15 shown in FIG. 1 (a) upside down.
In the closer bearing portion 15, the insert shaft portion 15a is inserted into the insert hole 3 of the upper hinge member 1, and the screw 17 inserted through the through hole 4a formed at the substantially central position of the cylindrical portion 4 is used as the closer bearing. It is fixed to the upper hinge member 1 by being screwed into the screw hole 15f to be provided on the insertion shaft portion 15a of the portion 15. The hinge members 1 and 2 are attached to the door A and the support C in advance, respectively, and the shaft 14b of the closer shaft portion 14 installed on the lower hinge member 2 is attached to the upper hinge member 2 of the closer bearing portion 15. Insert into the shaft hole 15b. At this time, the second
When the door A shown by the solid line in the figure is closed, as shown in FIG. 3, the slopes 14c and 14d of the closer shaft portion 14 completely contact the slopes 15d and 15e of the closer bearing portion 15, respectively, and The part 14 and the closer bearing part 15 are in close contact with each other,
The upper hinge member 1 is located at the lowermost end. In this state, the shaft portion 18a of the slip-out preventing screw 18 is inserted through the through hole 15c provided at the upper end of the closer bearing portion 15, and the male screw portion of the tip portion thereof is inserted into the female screw hole 14f of the closer shaft portion 14.
Then, the upper end of the insertion hole 3 of the upper hinge member 1 is covered with a cap 19. At this time, the removal prevention screw
Between the head portion 18b of 18 and the facing portion 15g of the screw head at the upper end of the closer bearing portion 15, as shown in FIG. 3, the closer shaft portion 14 and the slopes 14c, 14d of the closer bearing portion 15 and A space d that does not interfere with the height difference h of 15d and 15e is formed. In addition, the cylindrical portion 4 of the upper hinge member 1
Is the distance d and the insertion shaft portion 15a of the closer bearing portion 15.
Since it is formed sufficiently long, the screw head 18b is not exposed to the outside. When the door hinge having the above structure is rotated in the direction from the closed position shown by the solid line in FIG. 2 to the open position shown by the phantom line, the upper hinge member 1 that rotates together with the door A is provided. The attached closer bearing portion 15 rises together with the upper hinge member 1 by being guided by the slopes 14c and 14d of the closer shaft portion 14 attached to the lower hinge member 2. At this time, the captive screw 18 is attached to the head portion 18b and the closer bearing portion 15
Since the gap d is provided between the facing portion 15g and the facing portion 15g so as not to interfere with the height difference h of the slopes 14c and 14d, it does not prevent the closer bearing portion 15 from rising together with the upper hinge member 1. . As shown by the phantom line in FIG.
When it reaches a position before rotating by 180 °, the upper hinge member 1 reaches almost the uppermost position as shown in Fig. 4, and the head portion 18b of the removal preventing screw 18 comes into contact with the facing portion 15g, so that the door is closed. Further rotation and upward movement of A are restricted, and the door A is prevented from being removed. When the hand is released from the door A while the door A is being rotated, the closer bearing portion 15 descends together with the upper hinge member 1 along the slopes 14c and 14d of the closer shaft portion 14 due to its own weight. However, the door A is automatically rotated back to the closed position shown by the solid line in FIG. The hinge for the door in the above embodiment is the pillar C shown in FIG.
It can also be applied to the gate that opens to the right and is fixed to the column on the opposite side. In this case, the hinge members 1 and 2 are turned upside down so that the mounting portions 6 and 9 of the upper and lower hinge members 1 and 2 are symmetrical on the left and right sides of the gate with respect to FIG. In addition to the mounting, in this embodiment, it is necessary to rotate the closer shaft portion 14 by 180 ° so that the slopes 14c and 14d are inclined on the left and right sides of the gate. In the above embodiment, the closer shaft portion 14 is installed on the lower hinge member 2 and the closer bearing portion is installed on the upper hinge member 1, respectively.
However, even if the lower hinge member 2 is provided with the closer bearing portion 15, there is no obstacle in carrying out the door hinge according to the present invention. Further, the hinge members 1 and 2 and the closer shaft portion 14 or closer bearing portion 15 may be integrally molded instead of being separate bodies. However, in this case, it cannot be used as a left or right hand.

[Effect of device]

As described above, the door hinge according to the present invention is
One of the upper hinge member fixed to the door and the lower hinge member fixed to the door support is provided with a closer shaft portion having a shaft and a slope formed around the shaft, and the other hinge member is provided. The member is provided with a closer bearing portion having a shaft hole that rotatably receives the shaft of the closer shaft portion and an inclined surface that abuts an inclined surface formed around the shaft of the closer shaft portion, and further comprises the closer shaft portion. At the tip of the shaft, a tip end of a slip-off prevention screw having the shaft portion inserted through the closer bearing portion is screwed, and between the head of the slip-out prevention screw and the facing portion of the screw head of the closer bearing portion. Since the space that does not interfere with the height difference of the slope is provided and the screw head is configured to be vertically movable relative to the hinge member inside the hinge member without exposing the screw head to the outside, the door is Spring has a function to close automatically With resulting low cost without using a damper, in which there is exhibited an excellent effect that can be reliably prevented even if the removal of the door.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (a) is an exploded perspective view illustrating an embodiment of a door hinge according to the present invention, and FIG. 1 (b) is a closer bearing shown in FIG. 1 (a). 2 is a horizontal sectional view of a gate using the door hinge shown in FIG. 1 (a), and FIG. 3 is a sectional view showing the door hinge when the door is closed. Explanatory drawing, FIG. 4 is sectional explanatory drawing which shows the hinge for doors in the open state of a door. 1,2 ... Hinge member, 3,7 ... Insertion hole, 14 ... Closer shaft, 14b ... Shaft, 14c, 14d ... Slope, 15 ... Closer bearing, 15b ... Shaft hole, 15d, 15e ... Slope, 15g ... Face Part, 18 ... Detachment prevention screw, 18a ... Shaft part, 18b ... Head part, A ... Door, C ... Support (door support), h ... Height difference of slope, d ... Interval.

Claims (1)

[Scope of utility model registration request] 1. A closer having an upper hinge member fixed to a door and a lower hinge member fixed to a door support, the hinge member having a shaft and a slope formed around the shaft. A closer shaft bearing is provided, and the other hinge member is provided with a shaft hole that rotatably receives the shaft of the closer shaft part and a sloped surface that abuts a sloped surface formed around the shaft of the closer shaft part. A portion of the closure shaft, and the tip of the retainer screw is inserted into the closer shaft of the closer shaft. A space that does not interfere with the height difference of the slope is provided between the facing portion of the head and the screw head is vertically movable relative to the hinge member inside the hinge member without exposing the screw head to the outside. Hinges for doors featuring.